Time Efficient Parallel Imaging for 2D Multi-Slice MRI with Continuously Moving Table

Matthias Honal¹, Ute Ludwig¹, Jochen Leupold¹

The acquisition time is an important issue in MRI with continuously moving table, especially for acquisitions performed during multiple breath holding phases. In this study the application of the recently introduced z-GRAPPA method to MRI with continuously moving table is evaluated. This method increases the efficiency of parallel imaging for 2D multi-slice acquisitions by avoiding the measurement of additional calibration data. Instead k-space lines from adjacent slices are used for calibration. For a clinically relevant protocol, a speedup of 18% compared to conventional GRAPPA was achieved.